1. Stress tests for CLAS12 software
H.Avakian (Software Meeting, JLab March 8)
“Intermediate digitization” and reconstruction
The role of MC in testing of the reconstruction and calibration software.
Define the chain and procedures
Define stress tests
Which tests could be done before the IT Review?

2. What do we want to achieve for the review June 7/8 2012?
V.Burkert (March 2)
Be able to demonstrate that CLARA is the correct choice for CLAS12 data analysis, e.g. clear relationships, expandability, robustness, ….
Be able to demonstrate how data handling works within the CLARA framework, give example(s),….
Be able to show event displays of complete event simulation (examples: ep->epγ, ep->eπ+(n), ep->eπ+π-p) with Solenoid and Torus magnetic fields, hits in DC, SVT, MM, FTOF, CTOF, HTCC, LTCC, PCAL, EC.
Provide a relationship chart showing how the CLAS12 event builder works (Calib. DB, charged tracking, neutral reconstruction, particle ID, four-momentum reconstruction, complete event reconstruction with probability assignments, …).
Demonstrate event reconstruction of simulated exclusive processes without and with simulated beam background.
Show how Online and Offline analysis are linked to same database, etc.
Show timeline and milestones for the completion of the project

3. CLAS12 “intermediate digitization”MC
MC Generator:
ep ->e’p’, ep>e’pg, ep->ehX,….
CLAS12 configuration:
Std,tt,with IC,..
Background event:
None, 65K beam e-,….
MC event
GEANT4 simulation
DC,TOF,HTCC,CC,EC,PCAL… momentum/position/time
Extraction of “MC xxPB” banks
DC,TOF,EC,PCAL…
Digitization (ADC/TDC)
MC xxPB banks should be exact copies of Data xxPB banks:
ex. CCPB
Geometry info (x,y,z)
Number of ph.el.
………
CLAS12 reconstruction
DC,TOF,HTCC,CC,EC,PCAL… ADC/TDC hits
DC,TOF,EC,PCAL… (hits/clusters, ex. CCPB)
CLAS12 reconstructed event
(Particle 4momenta+ PID )

4. Testing CLAS12 reconstruction/simulation components
Data MC
MC Generator:
ep ->e’p’, ep>e’pg, ep->ehX,….
CLAS12 configuration:
Std,tt,with IC,..
Background event:
None, 65K beam e-,PYTHIA ph.prod.….
11 GeV beam on CLAS12
CLAS12 DAQ
GEANT4 digitization
CLAS12 Raw data
Test the calibration chain with different sets of input constants and dead channels
CLAS12 Calibration sets,dead channels,… (0)
CLAS12 Calibration sets (1)
Test the reconstruction chain
DC,TOF,EC,PCAL…PID
CLAS12 reconstruction
DC,TOF,EC,PCAL…PID
CLAS12 calibration
CLAS12 data quality checks, fiducial cuts,…
Physics analysis
CLAS12 event

5. Develop a realistic MC (events+background) for detector and physics checks and tests
Define the “intermediate digitization” (“pb” bank structure for all CLAS12 components)
Add PID components based on the “flux” from PYTHIA
(ex. )
Define the standards of quality/specifications for components(resolutions, efficiencies,…..)
Define mechanism for testing and checking
Setup the chain for quality checks for reconstruction and calibration (test inputs)
Create MC tests for calibration components
Create a general procedure to account for the dead channels (using ex. From CLAS)
timeline and milestones for completion of digitization, “mc digitization”, event reconstruction and calibration components and the whole chain.